Epa, U.P.K.de Silva, S.S.Wijeyaratne, M.J.S.Hettiarachchi, M.2014-11-192014-11-192001U.P.K. Epa, S.S. de Silva, M.J.S. Wijeyaratne and M. Hettiarachchi. The effectiveness of an organic immune enhancer and vitamin C in zero water exchange Penaeus monodon culture ponds. Paper presented at the Seventh Annual Scientific Sessions of the Sri Lanka Association for Fisheries and Aquatic Resources Colombo, Sri Lanka. 28.06.2001.http://repository.kln.ac.lk/handle/123456789/4321ShrimpsSri Lanka; Swamp animalsSri Lanka; Immune enhancer; Penaeus monodon;Culture pondsarticleFisheries Biology and Aquaculture